Hemp is what makes the difference. Double micro is what makes the diaper fat. I use a hemp + a micro. Double micro is what makes the diaper fat. I use a hemp + a micro. So everything I'm talking about is using a hemp+micro. (all of the following are pockets). The trimmest is Babykicks, FB OS Elite (but narrow, so if you have a chunk I'm not sure how that would fit), Simplex AIO, and gDiapers. I think that most people who get leaks with gDiapers haven't fully prepped the hemp (which all hemp needs 10+ washes to really work great) or have a bad fit. It's easy to get a bad fit with a gDiaper. Sized diapers are trimmer than OS because you don't have the snap bulk.